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The Definitive Guide to Scaling out SQL Server TheThe DefinitiveDefinitive GuideGuidetmtm TToo Scaling Out SQL Server 2005 Don Jones Chapter 1 Introduction to Realtimepublishers by Sean Daily, Series Editor The book you are about to enjoy represents an entirely new modality of publishing and a major first in the industry. The founding concept behind Realtimepublishers.com is the idea of providing readers with high-quality books about today’s most critical technology topics—at no cost to the reader. Although this feat may sound difficult to achieve, it is made possible through the vision and generosity of a corporate sponsor who agrees to bear the book’s production expenses and host the book on its Web site for the benefit of its Web site visitors. It should be pointed out that the free nature of these publications does not in any way diminish their quality. Without reservation, I can tell you that the book that you’re now reading is the equivalent of any similar printed book you might find at your local bookstore—with the notable exception that it won’t cost you $30 to $80. The Realtimepublishers publishing model also provides other significant benefits. For example, the electronic nature of this book makes activities such as chapter updates and additions or the release of a new edition possible in a far shorter timeframe than is the case with conventional printed books. Because we publish our titles in “real-time”—that is, as chapters are written or revised by the author—you benefit from receiving the information immediately rather than having to wait months or years to receive a complete product. Finally, I’d like to note that our books are by no means paid advertisements for the sponsor. Realtimepublishers is an independent publishing company and maintains, by written agreement with the sponsor, 100 percent editorial control over the content of our titles. It is my opinion that this system of content delivery not only is of immeasurable value to readers but also will hold a significant place in the future of publishing. As the founder of Realtimepublishers, my raison d’être is to create “dream team” projects—that is, to locate and work only with the industry’s leading authors and sponsors, and publish books that help readers do their everyday jobs. To that end, I encourage and welcome your feedback on this or any other book in the Realtimepublishers.com series. If you would like to submit a comment, question, or suggestion, please send an email to [email protected], leave feedback on our Web site at http://www.realtimepublishers.com, or call us at 800-509- 0532 ext. 110. Thanks for reading, and enjoy! Sean Daily Founder & Series Editor Realtimepublishers.com, Inc. i Chapter 1 Introduction to Realtimepublishers.................................................................................................. i Chapter 1: An Introduction to Scaling Out......................................................................................1 What Is Scaling Out? .......................................................................................................................1 Why Scale Out Databases? ..............................................................................................................3 Microsoft SQL Server and Scaling Out...............................................................................4 SQL Server 2005 Editions .......................................................................................6 General Technologies ..............................................................................................6 General Scale-Out Strategies...............................................................................................7 SQL Server Farms....................................................................................................7 Distributed Partitioned Databases............................................................................9 Scale-Out Techniques ........................................................................................................10 Distributed Partitioned Views................................................................................11 Distribution Partitioned Databases and Replication ..............................................13 Windows Clustering...............................................................................................13 High-Performance Storage.....................................................................................14 Hurdles to Scaling Out Database Solutions...................................................................................14 Database Hurdles ...............................................................................................................19 Manageability Hurdles.......................................................................................................19 Server Hardware: Specialized Solutions........................................................................................19 Comparing Server Hardware and Scale-Out Solutions .................................................................21 Categorize the Choices ......................................................................................................21 Price/Performance Benchmarks.........................................................................................22 Identify the Scale-Out Solution .........................................................................................23 Calculate a Total Solution Price ........................................................................................23 Take Advantage of Evaluation Periods..............................................................................23 Industry Benchmarks Overview ....................................................................................................24 Summary........................................................................................................................................25 Content Central ..............................................................................................................................25 Download Additional eBooks! ......................................................................................................25 ii Chapter 1 Copyright Statement © 2005 Realtimepublishers.com, Inc. All rights reserved. This site contains materials that have been created, developed, or commissioned by, and published with the permission of, Realtimepublishers.com, Inc. (the “Materials”) and this site and any such Materials are protected by international copyright and trademark laws. THE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. The Materials are subject to change without notice and do not represent a commitment on the part of Realtimepublishers.com, Inc or its web site sponsors. In no event shall Realtimepublishers.com, Inc. or its web site sponsors be held liable for technical or editorial errors or omissions contained in the Materials, including without limitation, for any direct, indirect, incidental, special, exemplary or consequential damages whatsoever resulting from the use of any information contained in the Materials. The Materials (including but not limited to the text, images, audio, and/or video) may not be copied, reproduced, republished, uploaded, posted, transmitted, or distributed in any way, in whole or in part, except that one copy may be downloaded for your personal, non- commercial use on a single computer. In connection with such use, you may not modify or obscure any copyright or other proprietary notice. The Materials may contain trademarks, services marks and logos that are the property of third parties. You are not permitted to use these trademarks, services marks or logos without prior written consent of such third parties. Realtimepublishers.com and the Realtimepublishers logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. If you have any questions about these terms, or if you would like information about licensing materials from Realtimepublishers.com, please contact us via e-mail at [email protected]. iii Chapter 1 [Editor’s Note: This eBook was downloaded from Content Central. To download other eBooks on this topic, please visit http://www.realtimepublishers.com/contentcentral/.] Chapter 1: An Introduction to Scaling Out Enterprise applications have become more complex and have taken on a greater burden for managing a company’s critical data. At the same time, the amount of data managed by those applications has swelled exponentially as companies begin to track an increasingly greater amount of information—data about customers, vendors, sales, and more. In addition, the advent and popularity of data warehousing has expanded the amount of stored data by a factor of a hundred or more. In short, we’re keeping track of more data than ever before, and our database servers are starting to show signs of strain. This strain has been the catalyst for interest in scaling out from a diverse audience that ranges from database administrators to CEOs. Even your organization’s CFO will care, as scaling up is often more expensive than scaling out, especially when scaling up requires the purchase of an expensive midrange or mainframe platform. What Is Scaling Out? As applications
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